Water-back for cooking-ranges



H. H. & F. H. STIMPSON.

Water Back of Cooking Ranges.

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WATER-BACK FOR COOKING-RANGES.

Specification of Letters Patent No. 7,401, dated May 28, 18 50.

To all whomit may concern Be it known that. we, HERBERT H. STIMP- SON and FREDERICK H. SriMrsoN, of Boston, in the county of Suffolk and State of Mas sachusetts, have invented certain new and useful Improvements in the Water-Backs 0f Coo-king-Ranges, and that the following is a full, clear, and eXact description of the principle or character which distinguishes our invention from all other things before known and of the method of making, constructing, and using the same, reference being had to the accompanying drawings, making part of this specification, in which Figure 1 is a plan of our improved water back and connections as applied to a range; and Figs. 2, and 3 vertical sections'taken at the lines (A, a,) and (B, Z2) of Fig. l.

The same letters indicate like parts in all the figures.

The object of our improvements is so to construct the water-back of ranges as to avoid the difficulty now attendant upon necessary repairs of the pipes and their connections with the back itself, owing to the intervening brick-work, and. also to con struct them in such a manner as to avoid the choking up of the pipes from sediment deposited in the back and pipes from the water.

Our invention consists in providing a means of preventing the pipes and back from choking with sediment and insuring a ready flow of the'water throughout, by casting the pipes into the hollow back, each with a convergence toward the other, when the inside of the top and bottom of the hollow back converge with the same angle, and coincide respectively with the induction and eduction pipes, whereby air is prevented from collecting in the hollow back over the water and producing the snapping noise so often heard in such backs, and whereby, also, a ready flow of the water is secured.

In the accompanying drawings represents a cooking range of the ordinary con- (0). The hollow back (Z) forms as usual the back of the fire chamber. The inducstruction with fire place E19) and boiler holes line( such, for instance, as the outside of the bottom of the boX,) the water will flow toward and fill first the farther end of the hollow back by which air is prevented from accumulating there and producing the cracking noise so often heard in such b acks.

The line of the inside of the bottom of the water back forms a very acute angle with a horizontal line, and also with the line of the inside of the top of the back, in order that the water may have a tendency to flow toward the near end of the box and back, through the eduction pipe (f) carrying with it the sediment which may have been deposited at the bottom, which may be removed by opening the valves in both pipes and permitting the water to flow freely through. The relative position of the lines of the hollow back are shown clearly in Fig. 4 which is a distorted view thereof, the dotted lines being parallel.

We are aware that water backs have been constructed in various formsas, for instance, they have been made prefectly rectangular inside and outside, and with the induction and eduction pipes horizontal and parallel to each other; but this arrangement is objectionable on account of the very defects which are remedied by our improvements, viz: the current is not suflicient to remove the sediment, and, as the hollow back cannot be always full of water, air will find an entrance and the cracking noise, before referred to, be produced; but never, as we believe have the pipes been cast in one piece with the hollow back. Therefore,

hat we claim as our invention and desire to secure by Letters Patent is 1. Casting the induction and eduction pipes of the hollow back of cooking ranges each with a convergence towards the other, when the lines of the inside of the top and bottom of the hollow back converge with the same angle and coincide respectively cumulation of air and securing a ready flow with the lines of the induction and eductlon of Water, as described.

pipes for the purpose and in the manner STIMPSON.

described. 5 2. We also claim constructing the hollow FRED' STIMPSON' back itself With the lines of the inside of the \Vit-ness es: top and bottom converging toward each JAMES D. HALL other for the purpose of preventingthe ac- ASA MAYO. 

